Repaired a Goodman GSX160601 air conditioner, installed in 2018. Located a low refrigerant charge and identified a leak in the liquid line using a Fieldpiece SRL8 heated diode leak detector. Repaired the leak with a SwageLok fitting, pulled a vacuum with a Robinair VacuMaster, and recharged with Mexichem R-410A per manufacturer specifications. Replaced the contactor and run capacitor from Diversitech. The system now operates at proper temperature split and energy efficiency ratings.